Hey I am a 21 year old girl... I am engaged... my problem is that whenever my fiancé used to kiss me ,it is OK... but as he starts doing more means sucking and all just within 2 minutes my vagina gets totally wet... and I feel so embarrassing... its my first time I am doing all this so I don't know if it is normal or not but I feel that don't know what he must be thinking if this is not normal... because yesterday he started foreplay and within 10min. I discharged so much that my undergarment was totally wet and even li'l bit my jeans too.. since then I am feeling so embarrassed that I di'nt talk with him till now...
Please tell me what to do

All perfectly normal and part of sexuality.