Negative

Please, I need your help and advise. I am 34yrs old and I have a 10-yr old daughter. My new bf after my daughter's dad have been trying to conceive for more than a year now. We've both been doing what we think is needed to conceive. We've both even consulted with the ob last year, but still we test negative. I had a period this 21st of May but it lasted for only 2 days, since the 23rd to now, i've got no more period. Been googling about it since this is the first time it happened to me. One reason I got together with the other many possible reasons is maybe I am pregnant, but just right now, I tested negative again 😢 I really am feeling sad and anxious. What do you think the problem is? 😔 please help. Later, il also try consulting with my ob. But for now, I need some advice....oh by the way, each morning when I lie on the bed, there is a movement or something I think is palpitation on the left lower part of my abdomen. It's almost near to the pelvic I guess...