I've been feeling weird symptoms lately such as bloated (which I know is a symptom of a period, but I never get bloated before a period) also dizzy, nauseous at times, I urinate more often and I feel very tired and sleepy. Also I've experienced back pains. I started freaking out after I searched for these symptoms online and they all were connected to pregnancy symptoms. I started trying to remember when my last period was. It started on the 5th of January and so tomorrow it'll be 37 days since. My boyfriend and I had sex without protection for the first time on the 2nd to last day of my period, thinking it would be okay. Also the following week we had sex and he pulled out and came on the outside of my vaginal area... and the whole month of January we've had a lot of sex where he uses no protection for a little while... then pulls out and puts on a condom to go back inside me. About 2 to 2 and a half weeks ago I also noticed a sticky brownish pink residue but I'm not sure if that would have anything to do with it, I've just never had it before. The problem is I've never actually kept track of how long my menstrual cycles are, even though I should. I'm 22 years old, and I've never gone through any of this... I need some advice, please!

Everyone's menstrual cycle is different. Everyone's pregnancy symptoms can vary.
My suggestion: Go pick up a pregnancy test at CVS.

If you're on day 37 of your cycle, its time to test. Follow the directions carefully and use first morning urine.

The length of your menstration is not as important as how long your entire cycle tends to last.

Based on the information you provided, it is possible you are pregnant. The pull out method (even with sometime condom use) is a method for getting pregnant, not avoiding it.

Condoms are only 97% effective, even when used correctly - which your boyfriend did not do.

My SIL is currently pregnant with #5. She has said that 3 of her children were conceived while using condoms.

First "pulling out" is not a valid method, it only reduces the sperm, there are sperm in all the early fluids.

Next if not using any protection you are merely asking to be pregnant, so can I assume you want to have a child ?

Condoms and pulling out while not 100 percent would be a lot better.