Trying to get pregnant. Any tips?

Hello ladies! Me and my husband have been trying to get pregnant for 5 months now but still no luck. I was on birth control last year from May to mid December and stopped so we can start trying. And my period is 3 days late (i have regular periods) so I did a pregnant test today cos I’ve been feeling funny (sore breasts, nausea, mad cravings) but it was still negative. 🥺 I feel so down. We really want to have a baby but I feel like my body is not cooperating cos I’m a big girl. I’ve heard bigger girls have trouble conceiving.

Do you have tips ladies?