2 weeks ago I had unprotected sex with my boyfriend on the first day of my period by the next night it was finished I'm a little worried about it as I've always had a regular 4 day cycle. I'm honestly a little behind in knowing whether I should be worried I'm pregnant or not as I grow up without a female influence, dad tries but I'm not comfortable going to him with this. I've felt a little weird for the last few days. Any advice or help would be appreciated Thanks

I'm honestly a little behind in knowing whether I should be worried I'm pregnant or not as I grow up without a female influence,

There are loads of resources on the Internet to learn details about the reproductive cycle. You should not be engaging in sexual intercourse until you full understand the risks and consequences.

Bottom line here is that ANY time you have penile insertion there is the risk of pregnancy. However, the first physical manifestation of pregnancy is a missed period. So you have to wait until your next period is due to see if you might be pregnant. Then wait another 2 weeks to start testing.

It's not uncommon for a period to be disrupted from sex during it. Pregnancy is possible, but very unlikely when you have sex at the start of a period, especially when you have a regular cycle as, in most cases, ovulation has already occurred... hence the period.

See what happens when you would expect your next period and test if necessary.