[Rogert]

hello all

i was just out doing some diving with my little sister and i kept on getting headaches. it only seems to be when i push my limits aswell. but i still feel like i can go for longer but because my sister is not very confident i dont push myself too hard. so i come up and i will have a really bad headache for about 5 seconds and thats it, it just dissapears and i feel like i can dive again. any suggestions as to what is going on? any suggestions is greatly appreciated