havent had any sexual contacts except dry humping...

Hi,
Welcome to ehealthforum,
Pregnancy does not result if semen of pre-cum has not come in contact with vagina or if you were not during your fertile days at time of sexual contact. If the symptoms suggestive of pregnancy are persistent, or if you suspect chances of pregnancy, you should consider visiting your doctor/gynecologist for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). If pregnancy is confirmed, an ultrasound scan done will also help to know the gestational age and viability, and serial HCG levels showing doubling up of the hormone levels in 48-72 hours will show that pregnancy is going on smoothly. Visit your doctor/gynecologist for further evaluation and assistance. If pregnancy gets ruled out, further evaluation would be done to look for the underlying cause for your missed/absent periods. Treatment as appropriate (based on examination findings and investigations results) would be started to help you regulate your periods. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy diet and lifestyle.
Take care.