Well if you are leaking coolant into your oil galleries, then your oil is getting thinned out... and that could lead to a spun bearing and more engine work. If you check your oil levels often, you will see that your car seems to be producing oil. A fully blown head gasket will lead to overheating your engine badly.... and a warped block. Is there white vapor in your exhaust trail yet?

You should really change that head gasket NOW. If you can't do it on your own, find some mechanically savvy friends to help you.

Go with oem parts and Honda coolant. How many miles on your engine?