Baby is too small at 7 weeks (less than an inch pa ata siya niyan) para maka cause ng bigat sa puson. Though cramps similar to mentsrual is normal. If you tested positive, wait patiently for your next ultrasound. At 5 weeks gestational sac lang nakita sa akin, after a week may fetal pole and heartbeat at 110bpm na. At 8 weeks lumaki na siya and heartbeat at 169bpm. Take your vitamins religiously, hydrate, and eat on time lang while waiting.