My husband and I are trying to conceive and we had sex on my highest fertility day last month and then about 2 days later I was having symptoms of pregnancy. I then got my early for like 2 days but it was only spotting like brown. Then it stopped and I got my period on the expected day and it has only lasted about 4 days and now it's not even there. I usually have it for 7 days and it is heavy all 7 days. I have pregnancy symptoms also. Back pain, leg cramps, frequent urination, nausia and headaches. Could it be possible for me to be pregnant even if I had a normal period for 4 days?

Please help!!