Bfp 4 weeks after Miscarriage

Had a mc on the 21/11/14, my partner and i have only had sex twice since, did not track ovulation throughout this time and without having a 'first' normal period I have had all my pregnancy symptoms come back. Tested twice last week with bfn and this morning I tested again with an obvious BFP! Im just scared of losing this one. Ive never been through this before, so close to christmas and we are going away so wont be able to see dr for a couple of weekz. Anyone has a similar experience?