Cramping

Ok so this is my 1st post and I'm not too sure how this works but here it goes. This is my full story to explain my situation further.

My husband and I have been trying to conceive for the past 4 and a half years. Ever since I started my period (almost 18 years ago) I have been very irregular and later I found out I had cysts in my ovaries. I've gone with different doctors who have helped me be "regular" with different types of meds. Ever since we began dating (10 and a half years ago) I told him about my issue so he knew there could be issues if we wanted to have kids at some point in our relationship. We had a long distance relationship for 6 years before getting married (waited to have sex until marriage) for the past 4 and a half years that we have been married we have never taken care of ourself because we just didn't know what was going to happen with my situation.

I have been going to the doctor to make me "regular" but still we were not able to conceive. I gave up on the doctor for a while and last year decided to go to an infertility specialist and he helped me greatly, I found out one of my fallopian tubes was obstructed and had a hormone imbalance. I began shots in my stomach and was able to ovulate normally and I got my period normally but did not conceive. I had a loss in my family so we decided to wait to try again.

after that treatment my "regular" became every 2 months which was great. Finally 2 months ago I went to the doctor again and got my hormone shots once again which again worked perfectly, the doctor told us I would be ovulating last week and told us what days we really needed to try so we did.

Ever since my period my boobs have been sensitive and sore and this week I have been feeling very tired and sleepy. For the past couple of days I have been feeling a bit of cramping, is this normal??

I honestly think it might all in my head but wanted to know if you ladies have any opinions. I don't want to get my hopes up but I don't want to bring myself down either. Is it too soon for me to feel something?? Has this happened to any of you before??