cramps

my husband and I have been ttc for the past 2 months. Around 2 weeks ago I started to get very bad side cramps (right side) and it occasionally goes into my lower abdomen, I am also very bloated. I've tested 2x already this month and I've gotten bfn's both times. I also usually have my period for 7 days but this past cycle was only 4 days. I have googled the crap out of my symptoms and it says it could be from being pregnant. Any advice is welcome, as long as its not bashing me. TIA